Finding the Fourth Proportional to 3,992,136.79, 5,509,143.29 and 2,273,257.26
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Solution
The fourth proportional to 3,992,136.79, 5,509,143.29 and 2,273,257.26 is: 3,137,091.90
Step by Step Solution
- Step 1: Write the proportion equation
3,992,136.79 : 5,509,143.29 = 2,273,257.26 : x - Step 2: Convert to fraction form
3,992,136.79/5,509,143.29 = 2,273,257.26/x - Step 3: Cross multiply
3,992,136.79x = 5,509,143.29 × 2,273,257.26 - Step 4: Simplify right side
3,992,136.79x = 12,523,699,980,372.79 - Step 5: Solve for x
x = 12,523,699,980,372.79/3,992,136.79 - Step 6: Final answer
x = 3,137,091.90
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.